DL 1007 then WN 2122 at Atlanta
Washington National → Atlanta → Dallas
Timetable, Atlanta time
21:41DL 1007 from Washington National at the gate
13:00WN 2122 to Dallas leaves the gate
15 h 19 apart on the timetable, overnight
WN 2122 leaves 15 h 19 after DL 1007 arrives on the timetable: more than half a day, so not a connection we count.